Recertification
To ensure they maintain competency and keep abreast of changing technology, pesticide applicators in Pennsylvania must get recertified after three years. On this page, find information for pesticide applicators seeking recertification credits, including how to find credits, a list of upcoming opportunities, Penn State’s online recertification course, and frequently asked questions.
How to Get Pesticide Recertification Credits
A commercial, public, and private pesticide applicator license in Pennsylvania is valid for three years. If you want to maintain certification, you must attend update training programs in order to accumulate recertification credits in core and appropriate category-specific topics. You have to do this at three-year intervals.
Interactive online recertification courses are available for pesticide applicators who want to earn recertification credits at their own convenience. You can register for online courses in English and Spanish. If you want to find out about core and category-specific recertification credit opportunities, you can search the Pennsylvania Department of Agriculture’s PaPlants website.
To determine the number of credits you need to maintain your applicator’s license, you can contact an Extension office. However, it’s much easier to look up your pesticide applicator recertification credits online.
Penn State Extension has a vast range of recertification credit programs, meetings, and courses you can take advantage of. Here are some examples:
- Pesticide Core Credit Recertification: Covers pesticide safety and you earn 4 core Pennsylvania pesticide applicator recertification credits
- Plant Health Diagnosis: Accession Plant Diseases, Pests and Problems: Covers diagnosing plant health problems and you earn 4 PDA pest applicator recertification credits
- Pesticide Sprayer Cleanup: Covers the why, where, and how to clean your sprayer and you earn 1 PDA core credit
- Aquatic Pesticide Management: Using Aquatic Herbicides for Pond Weeds and Algae: Covers the management of nuisance pond plants and algae growth and you earn 3 PDA Category 9 or Private Category credits
- Keeping Pesticides out of Groundwater: Covers groundwater and contamination and you earn 2 Core PDA credits
- Winterizing Pesticide Sprayers: Learn when and how to winterize sprayers. This online course is an opportunity to earn 1 PDA core credit
- Forage Disease Pesticide Update: You can earn 2 core and 2 category credits by completing this correspondence course
- Professional Pest Managers School: Provides an opportunity to earn recertification credits in categories where it's difficult to find credits
- Agronomic Pesticide Update Webinar: Earn 2 core and 2 category credits by attending this webinar
- Crops Conference: Learn about key current crop management issues and earn pesticide, nutrient management, and certified crop adviser credits
- Agronomic Pesticide Update: This is a traditional 2 core and 2 category credit workshop for pesticide applicators
In this section, find all the necessary information to maintain your pesticide applicator license and get recertification credits.
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ArticlesSo, You Need to Find Recertification Credits? We Can Help
Find available online recertification courses from Penn State Extension and PaPlants. -
ArticlesPesticide Applicator Frequently Asked Recertification Questions
Read responses to commonly asked questions we receive about the pesticide applicator recertification process. -
NewsSoil Fumigation Credit Opportunity
Date Posted 3/9/2026A workshop covering soil fumigation principles and practices offering to PDA category 21 credits is being offered by Penn State Extension. -
NewsPenn State Extension Seeks Input on Pesticide Education Programming
Date Posted 2/11/2026Penn State Extension’s pesticide education team is conducting a survey to help shape its future programming. -
Online Courses$25.00
Managing Stinging Insects for Pesticide Applicators
Sections 2Length 1 hourLearn to identify, assess, and make informed, safe decisions to manage bees, wasps, and hornets, including appropriate pesticides to use. Earn 2 PDA category 11, 18, or 23 credits. -
Online Courses$99.00
Managing Invasive and Competing Plants in Forests
Sections 10Length 9 hours, 30 minutesLearn to identify and control invasive and competing plants in forests using Integrated Vegetation Management. Earn 10 PDA category 5, 10, 18, or 23 pesticide applicator credits. -
Online Courses$39.00
Tomato Growing Basics: A Guide to Successful Harvests
Sections 7Length 4 hoursExperts show how to: plan your garden; prepare soil; start seeds; choose transplants; plant, mulch, water, prune, and harvest tomatoes; and manage common pests. Earn 1 PDA Category 3, 18, or Private Category. -
Online Courses$30.00
Herbicide Basics for Forest and Natural Areas Management
Sections 1Length 1 hour, 30 minutesPesticide applicators learn how to choose, mix, and apply herbicides effectively for forest and natural area vegetation management while protecting people and the environment. Earn 3 PDA Category 5, 6, 7, 18, 23 or Private pesticide applicator credits. -
Online Courses$25.00
What's New in Agronomic Pest Control: 2026
Sections 3Length 1 hourLearn about pesticide updates, using IPM to control pesticide resistance, tools to fight crop diseases, and more. Earn 2 PDA Category 1, 18, or Private pesticide applicator credits. -
Online Courses$15.00
Integrated Management for Invasive and Competing Forest Vegetation
Sections 1Length 30 minutesLearn cultural, mechanical, biological, and chemical methods for integrated forest vegetation management to control invasive and competing plants. Earn 1 PDA Category 5, 6, 10, 18, 23 or Private pesticide applicator credit. -
WorkshopsVegetable and Field Crops Pesticide Update
Length 3 hoursJoin Penn State Extension to earn pesticide recertification credits while learning vegetable and agronomic crop health and best management practices. -
Online Courses$30.00
Identification and Management of Invasive Vines in Forests
Sections 2Length 1 hour, 30 minutesPesticide applicators learn how to identify and control invasive vines in wooded areas and forests in the Northeast. Earn 3 PDA Category 5, 6, 10, 18, 23, or Private pesticide applicator credits. -
Online Courses$30.00
Identification and Management of Competing Native Forest Vegetation
Sections 2Length 1 hour, 30 minutesLearn how to manage native plants in wooded areas and forests in the Northeast. Earn 3 PDA Category 5, 6, 7, 18, 23 or Private pesticide applicator credits. -
Online Courses$30.00
Identification and Management of Invasive Shrubs in Forests
Sections 2Length 1 hour, 30 minutesPesticide applicators learn how to identify and control invasive shrubs in wooded areas and forests in the Northeast. Earn 3 PDA Category 5, 6, 10, 18, 23 or Private pesticide applicator credits. -
Online Courses$30.00
Identification and Management of Invasive Herbaceous Plants in Forests
Sections 2Length 1 hour, 30 minutesPesticide applicators learn how to identify and control invasive herbaceous plants in wooded areas and forests in the Northeast. Earn 3 PDA Category 5, 6, 10, 18, 23, or Private pesticide applicator credits. -
Online Courses$30.00
Identification and Management of Invasive Trees in Forests
Sections 2Length 1 hour, 30 minutesPesticide applicators learn how to identify and control invasive trees in wooded areas and forests in the Northeast. Earn 3 PDA Category 5, 6, 10, 18, 23, or Private pesticide applicator credits. -
Online Courses$15.00
Herbicide Application Techniques for Invasive Plant Management
Sections 1Length 30 minutesPesticide applicators learn how to perform basal bark, cut-stump, hack-and-squirt, and foliar applications. Earn 1 PDA Category 5, 6, 10, 18, 23, or Private pesticide applicator credits. -
Online Courses$25.00
Impact of Water Quality on Pesticide Performance
Sections 4Length 1 hourLearn how water quality affects pesticide performance by exploring pH, hardness, turbidity, and proper mixing techniques for effective application. Earn 2 PDA core credits. -
Online Courses$25.00
What's New in Agronomic Pest Control: 2025
Sections 3Length 1 hourLearn about pesticide updates, controlling western corn rootworm, weather and crop diseases, and more. Earn 2 PDA Category 1, 18, or Private credits. -
Online Courses$25.00
What's New in Agronomic Pest Control: 2024
Sections 3Length 1 hourLearn about herbicides, integrated pest management (IPM) for field crops and small grain pests, tar spot of corn, and using drones in agriculture. Earn 2 PDA Category 1, 18, or Private credits. -
Guides and Publications$10.00Pesticide Applicator Recertification Workbook: Worker Protection Standard
Earn two Core pesticide recertification credits. Pesticide applicator recertification correspondence course workbook on EPA's Worker Protection Standard. -
Online Courses$59.00
Turfgrass Installation and Maintenance
Sections 6Length 4 hoursLearn about turfgrass species, uses, establishment and maintenance practices, weeds, pests, and diseases. Earn 6 PDA Category 7, 18, 23, or Private credits. Earn PCH credits. -
WebinarsCrops Conference
Length 5 hours over 2 daysThis two-day virtual seminar offers opportunities to earn pesticide credits and to learn about key current crop management issues. -
Online Courses$25.00
Pesticide Laws and Regulations
Sections 4Length 1 hourLearn how federal laws and agencies like the EPA regulate pesticides, from registration through disposal. Earn 2 PDA core credits. -
Online Courses$25.00
Pesticide Hazards and First Aid
Sections 4Length 1 hourPesticide applicators learn about the hazards of pesticides, classifications of those hazards, their routes and symptoms of exposure, and appropriate first aid response. Earn 2 PDA core credits.


